Celebrity Body Tips: Trainer David Kirsch Spills All

How amazing did Anne Hathaway look last night while hosting the Oscars? Despite numerous outfit changes, she made the marathon of an event seem easy. The man behind that hardcore stamina? Celebrity trainer David Kirsch, who also regularly whips Heidi Klum, Liv Tyler, and Jimmy Fallon into shape. We chatted to him about his top tips on eating right and working out.

Try this for inspiration. If you need some motivation to get to the gym, Kirsch recommends jumping up and down in front of the mirror, nude: "If things are still moving after you've stopped jumping, you might want to de-jiggle them."

Fill up on super foods. "Blueberries, strawberries, and broccoli are all high in vitamins," he says. "Asparagus is the best at de-bloating, since it helps flush out the bad stuff."

Satisfy your sweet tooth. Kirsch has a new line of bars (The Kirschbar, available now at davidkirschwellness.com) that taste good enough that I questioned, "How can these be healthy?" Kirsch swears they are: they're free of preservatives, have 20 grams of protein (including egg whites), 6 grams of fiber, 240 calories, and no artificial sweeteners. "They're a meal replacement bar or an afternoon snack. I also like eating half before a workout and the rest after," Kirsch explained.

Get low. If you have a big event and want to tone up fast, cut alcohol and carbs from your diet, and try exercises you can do at home: lunges, planks, and push-ups.

Get pumped. "Work out to music that's fun for you. I like a good beat; something from Jay-Z or Eminem."

And while I had him on the phone, I couldn't resist asking Kirsch which body part celebrities are most concerned with these days, Before I even finished the question, Kirsch chimed in: "Ass. You want what you don't have, so if you're thin, you want more curves and if you're curvy, you want a higher, tighter one.'"